Patents by Inventor Matsumi Ichimura

Matsumi Ichimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Reflective type optical sensor device
    Patent number: 5105239
    Abstract: Receiving sections for receiving light emitting and light receiving elements are formed in a housing. The axes of the light emitting and light receiving elements which are inserted into the receiving sections are optically coupled at a preset angle. Further, light transmission windows are formed in the housing in front of the light emitting and light receiving elements which are inserted into the receiving sections, and the opening area of the light transmission window on the light receiving element side is made smaller than that of the light transmission window on the light emitting element side.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: April 14, 1992
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tsuguo Uchino, Matsumi Ichimura